DocumentCode
3147822
Title
Electret condenser microphones for measurement instruments
Author
Ohyagi, A. ; Adachi, D. ; Kodama, H. ; Yasuno, Y.
Author_Institution
Rion Co., Ltd., Tokyo
fYear
2008
fDate
15-17 Sept. 2008
Abstract
In this paper, 1/2 inch and 1/4 inch ECM for measurement were discussed. The changes of sensitivity to frequency in UC-59 is within plusmn 0.2 dB from 10 Hz till l 7 kHz while it is within plusmn 0.3 dB from 100 Hz till 30 kHz in UC-54. The linearity of measured value and applied sound pressure was realized below 148 dB in UC-59.
Keywords
acoustic variables measurement; capacitive sensors; dielectric devices; electrets; microphones; microsensors; ECM; UC-59 frequency sensitivity; applied sound pressure; electret condenser microphones; measurement instruments; size 0.25 inch; size 0.5 inch; Electrets; Electric variables measurement; Electrochemical machining; Frequency dependence; Frequency measurement; Frequency response; Instruments; Linearity; Microphones; Pressure measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrets, 2008. ISE-13. 13th International Symposium on
Conference_Location
Tokyo
Print_ISBN
978-1-4244-1850-3
Electronic_ISBN
978-1-4244-1851-0
Type
conf
DOI
10.1109/ISE.2008.4814068
Filename
4814068
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